Pretty sure you can get system kicked for idling an entire round.
– AequitasSep 27 '15 at 22:47

Well that's not exactly what I mean, its just that... the console kicks you right?
– StickySep 29 '15 at 1:23

What do you mean the console kicks you? The console doesn't determine whether or not you get kicked; its the game logic that determines if you get kicked. The console is just a place to input commands, but it cannot kick you.
– senpaiSep 29 '15 at 2:12

No. You can't be kicked from a competitive match for any reason unless your teammates vote you off.

Since competitive requires you to commit to playing the match it finds for you, it won't kick you for not moving — you have agreed to play. So if you idle during warmup, you're expected to return before the match starts.

if you idle in a competitive match you will get kicked and banned automatically
– AequitasSep 28 '15 at 1:28

1

I've idled through an entire round plenty of times and I wasn't kicked. The system won't do that. If your teammates don't like it, they kick you.
– AdamSep 28 '15 at 1:33

@Adam You have to be idle more than a round. It's more like 3 or 5 rounds of idle and yes, you will get auto kicked. That's considered intentional griefing, and you will be kicked and cooldowned if you don't reconnect before the reconnect timer runs out.
– Lo-TanMay 8 '16 at 21:12

@Lo-Tan Then the rule must have been changed since I posted this answer.
– AdamMay 8 '16 at 21:14